Collect UMA data for Origin Trials

third_party/WebKit/public/platform/WebOriginTrialTokenStatus.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef WebOriginTrialTokenStatus_h
+#define WebOriginTrialTokenStatus_h
+
+namespace blink {
+
+// The enum entries below are written to histograms and thus cannot be deleted
+// or reordered.
+// New entries must be added immediately before the end.
+enum class WebOriginTrialTokenStatus {
+    Success = 0,

[jochen (gone - plz use gerrit), 2016/05/04 10:55:26]

what's the point of specifying the values? as far as I can see, they match
exactly what would be auto-assigned

[chasej, 2016/05/04 13:03:59]

I wanted the values to be explicit, to make it easier to match against the
histogram enum values. I think being explicit also helps guard against future
additions/deletion changing the values.

+    NotSupported = 1,
+    Insecure = 2,
+    NoTokens = 3,
+    Expired = 4,
+    WrongFeature = 5,
+    WrongOrigin = 6,
+    InvalidSignature = 7,
+    Malformed = 8,
+    WrongVersion = 9,
+    Last = WrongVersion
+};
+
+} // namespace blink
+
+#endif // WebOriginTrialTokenStatus_h